High speed train to Ankara has opened. But Pendik is far away from city center. Direct access with one public transport service is not possible from most of the major regions in Istanbul. And there are many different combinations. Therefore you have to decide which way to chose from several alternatives.
Here are simplest ways to go to Pendik High Speed Train Station by public transport from major regions of Istanbul (Last update: August 2017):
|Sabiha Gökçen Airport||9|
|Mass transit in İstanbul||10|